chore(deps): update pnpm to v9 #4897

Job	Run time
Install	25s
Lint	18s
Default Tests	18s
Publish Docs to Cloudflare Pages	1m 32s
Floating Deps Test	28s
[email protected]	30s
[email protected]	30s
[email protected]	40s
[email protected]	31s
ember-lts-4.4	31s
ember-lts-4.8	27s
ember-release	43s
ember-beta	28s
ember-canary	29s
'ember-lts-4.8 + embroider-safe'	27s
'ember-lts-4.8 + embroider-optimized'	28s
'ember-release + embroider-optimized'	27s
Release	20s
	9m 32s

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